77877142 has 16 divisors (see below), whose sum is σ = 134525952. Its totient is φ = 33120360.

The previous prime is 77877139. The next prime is 77877179. The reversal of 77877142 is 24177877.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19398 + ... + 23065.

It is an arithmetic number, because the mean of its divisors is an integer number (8407872).

Almost surely, 2^77877142 is an apocalyptic number.

77877142 is a deficient number, since it is larger than the sum of its proper divisors (56648810).

77877142 is a wasteful number, since it uses less digits than its factorization.

77877142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42603.

The product of its digits is 153664, while the sum is 43.

The square root of 77877142 is about 8824.8026606831. The cubic root of 77877142 is about 427.0414210980.

The spelling of 77877142 in words is "seventy-seven million, eight hundred seventy-seven thousand, one hundred forty-two".